Denison Announces Initiation of ISR Field Testing as the Summer Field Program Commences at Wheeler River

TORONTO, June 26, 2019 /PRNewswire/ – Denison Mines Corp. (“Denison” or the “Company”) (DML: TSX, DNN: NYSE American) is pleased to announce the commencement of In-Situ Recovery (“ISR”) field testing, as part of an active summer 2019 field program planned for the Company’s 90% owned Wheeler River Uranium Project (“Wheeler River”) in northern Saskatchewan, Canada. Key components of the field program include: